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Microsoft’s Hypocrisy on AI

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Friday, September 13, 2024

Microsoft executives have been thinking lately about the end of the world. In a white paper published late last year, Brad Smith, the company’s vice chair and president, and Melanie Nakagawa, its chief sustainability officer, described a “planetary crisis” that AI could help solve. Imagine an AI-assisted tool that helps reduce food waste, to name one example from the document, or some future technology that could “expedite decarbonization” by using AI to invent new designs for green tech.But as Microsoft attempts to buoy its reputation as an AI leader in climate innovation, the company is also selling its AI to fossil-fuel companies. Hundreds of pages of internal documents I’ve obtained, plus interviews I’ve conducted over the past year with 15 current and former employees and executives, show that the tech giant has sought to market the technology to companies such as ExxonMobil and Chevron as a powerful tool for finding and developing new oil and gas reserves and maximizing their production—all while publicly committing to dramatically reduce emissions.Although tech companies have long done business with the fossil-fuel industry, Microsoft’s case is notable. It demonstrates how the AI boom contributes to one of the most pressing issues facing our planet today—despite the fact that the technology is often lauded for its supposed potential to improve our world, as when Sam Altman testified to Congress that it could address issues such as “climate change and curing cancer.” These deals also show how Microsoft can use the vagaries of AI to talk out of both sides of its mouth, courting the fossil-fuel industry while asserting its environmental bona fides. (Many of the documents I viewed have been submitted to the Securities and Exchange Commission as part of a whistleblower complaint alleging that the company has omitted from public disclosures “the serious climate and environmental harms caused by the technology it provides to the fossil fuel industry,” arguing that the information is of material and financial importance to investors. A Microsoft spokesperson said the company was unaware of the filing and had not been contacted by the SEC.)For years, Microsoft routinely promoted its work with companies such as Schlumberger, Chevron, Halliburton, ExxonMobil, Baker Hughes, and Shell. Around 2020, the same year Microsoft made ambitious climate commitments that included a goal to reach carbon negativity by 2030, the tech firm grew quieter about such partnerships and focused on messaging about the transition to net zero. Behind the scenes, Microsoft has continued to seek business from the fossil-fuel industry; documents related to its overall pitch strategy show that it has sought energy-industry business in part by marketing the abilities to optimize and automate drilling and to maximize oil and gas production. Over the past year, it has leaned into the generative-AI rush in an effort to clinch more deals—each of which can be worth more than hundreds of millions of dollars. Microsoft employees have noted that the oil and gas industries could represent a market opportunity of $35 billion to $75 billion annually, according to documents I viewed.Based on the documents, executives see these generative-AI tools—the buzziest new technology since the iPhone, and one that Microsoft has invested billions of dollars in—as a kind of secret weapon for client outreach. During an internal conference call with more than 200 employees last September, a Microsoft energy exec named Bilal Khursheed noted that, since the company’s generative-AI investments, the energy industry was turning to Microsoft for guidance on AI in a way that had perhaps “never happened before.” “We need to maximize this opportunity. We need to lay out the pathway to adopting generative AI,” he said, according to a transcript of the meeting I viewed. One such pathway? Using generative algorithms to model oil and gas reservoirs and maximize their extraction, Hema Prapoo, Microsoft’s global lead of oil and gas business, said later in the meeting. Several documents also emphasize Microsoft’s unique relationship with OpenAI as an additional selling point for energy clients, suggesting that GPT could drive productivity separate from fossil-fuel extraction. (OpenAI did not respond to a request for comment.)From a business perspective, of course, Microsoft’s pursuit of massive deals with fossil-fuel companies makes sense. And such partnerships do not necessarily mean that the company is contradicting its climate commitments. Microsoft executives have made the case that AI can also help fossil-fuel companies improve their environmental footprint. Indeed, both Microsoft and its energy customers defend their partnerships by arguing that their goals work in harmony, not contradiction. They told me that AI services can make oil and gas production more efficient, increasing production while reducing emissions—a refrain I saw repeated in documents as part of Microsoft’s sales pitches. In addition, some of these companies run wind farms and solar parks, which further benefit from Microsoft’s cloud technologies. Microsoft has also touted exploratory academic research into how AI could be used to discover new materials for reducing CO2 in the atmosphere.The idea that AI’s climate benefits will outpace its environmental costs is largely speculative, however, especially given that generative-AI tools are themselves tremendously resource-hungry. Within the next six years, the data centers required to develop and run the kinds of next-generation AI models that Microsoft is investing in may use more power than all of India. They will be cooled by millions upon millions of gallons of water. All the while, scientists agree, the world will get warmer, its climate more extreme.[Read: AI is taking water from the desert]Microsoft isn’t a company that exists to fight climate change, and it doesn’t have to assume responsibility for saving our planet. Yet the company is trying to convince the public that by investing in a technology that is also being used to enrich fossil-fuel companies, society will be better equipped to resolve the environmental crisis. Some of the company’s own employees described this idea to me as ridiculous. To these workers, Microsoft’s energy contracts demonstrate only the unsavory reality of how the company’s AI investments are actually used. Driving sustainability forward? Maybe. Digging up fossil fuels? As Prapoo put it in that September conference call, it’s a “game changer.”Before Holly Alpine left Microsoft earlier this year—fed up, she said, with the company’s continued support of fossil-fuel extraction—she had spent nearly a decade there working in roles focused on energy and the environment. Most recently, she headed a program within Microsoft’s cloud operations and innovation division that invests in environmental sustainability projects in the communities that host the company’s data centers. Alpine had also co-founded a sustainability interest group within the company seven years ago that thousands of employees now belong to. (Like the other named sources in this story, she did not provide any of the documents I reviewed.)Members of this group initially concerned themselves with modest corporate matters, such as getting the company’s dining halls to cut down on single-use items. But their ambitions grew, partly in response to Microsoft’s own climate commitments in 2020. These were made during a moment of heightened climate activism; millions around the world, including tech workers, had just rallied to protest the lack of coordinated action to cut back carbon emissions.Microsoft has failed to reduce its annual emissions each year since then. Its latest environmental report, released this May, shows a 29 percent increase in emissions since 2020—a change that has been driven in no small part by recent AI development, as the company explains in the report. “All of Microsoft’s public statements and publications paint a beautiful picture of the uses of AI for sustainability,” Alpine told me. “But this focus on the positives is hiding the whole story, which is much darker.”The root issue for Alpine and other advocates is Microsoft’s unflagging support of fossil-fuel extraction. In March 2021, for example, Microsoft expanded its partnership with Schlumberger, an oil-technology company, to develop and launch an AI-enhanced service on Microsoft’s Azure platform. Azure provides cloud computing to a variety of organizations, but this product was tailor-made for the oil and gas industries, to assist in the production of fossil fuels, among other uses. The hope, according to two internal presentations I viewed, was that it would help Microsoft capture business from many of the leading fossil-fuel providers. A spokesperson for Schlumberger declined to comment on this deal.Recent AI advances have complicated the picture, though they have not changed it. One slide deck from January 2022 that I obtained presented an analysis of how Microsoft’s tools could allow ExxonMobil to increase its annual revenue by $1.4 billion—$600 million of which would come from maximizing so-called sustainable production, or oil drilled using less energy. (An ExxonMobil representative declined to comment.) Other documents provided details on multiple deals Chevron has signed with Microsoft to access the tech giant’s AI platform and other cloud services. An executive strategy memo from June 2023 indicated that Microsoft hoped to pitch Chevron on adopting OpenAI’s GPT-3.5 and GPT-4 to “deliver more business value.” A Chevron spokesperson told me that the company uses AI in part to “identify efficiencies in exploration and recovery and help reduce our environmental footprint.” There is the tension. On the one hand, AI may be able to help reduce drilling’s toll on the environment. On the other hand, it’s used for drilling.[Read: Every time you post on Instagram, you’re turning on a light bulb forever]How do these companies weigh the environmental benefits of a more efficient drilling operation against the environmental harms of being able to drill more, faster? A Shell spokesperson provided a quantifiable example of their thinking: Microsoft’s Azure AI platform allowed Shell to calculate the best settings for its equipment, driving down carbon emissions at several of its natural-gas facilities. One facility saw an estimated reduction of 340,000 metric tons of carbon dioxide per year. This seems impressive: Using estimated emissions from the EPA, this is roughly the amount of CO2 generated by 74,000 cars annually. Relative to Shell’s total emissions, however, it’s practically insignificant. According to the company’s own reporting, Shell was responsible for about 1.2 billion metric tons of emissions last year.Within Microsoft, members of the sustainability group have repeatedly petitioned leadership to change its stance on these contracts. Google, for example, announced in 2020 that it would not make custom AI tools for fossil-fuel extraction—couldn’t Microsoft do the same? “We’ve never advocated for cutting ties with the fossil-fuel industry,” Alpine told me. Microsoft could work with clients on their transition to clean energy, without explicitly supporting extraction, Alpine reasoned.To help make her case, Alpine presented a memo to Smith in December 2021 that calculated the effects of the company’s oil and gas deals. She pointed, for example, to a single 2019 deal with ExxonMobil that could purportedly “expand production by as much as 50,000 oil-equivalent barrels a day by 2025,” according to a Microsoft press release. Those extra barrels would produce an estimated 6.4 million metric tons of emissions, drastically outweighing a carbon-removal pledge that Microsoft made in 2020, she wrote. (I verified her estimate with multiple independent carbon analysts. ExxonMobil declined to comment.)Employee advocates asked company leadership to amend its “Responsible AI” principles to address the environmental consequences of the technology. The group also recommended further restrictions on fossil-fuel-extraction projects. Around this time, Microsoft instead released a new set of principles governing the company’s engagements with oil and gas customers. It was co-authored by Darryl Willis, the corporate vice president of Microsoft’s energy division (and a former BP executive who served as BP’s de facto spokesperson during the Deepwater Horizon crisis). Unsurprisingly, it did not adopt all of the group’s suggestions.What it did include was a stipulation that Microsoft will support fossil-fuel extraction only for companies that have “publicly committed to net zero carbon targets.” This may be cold comfort for some: A 2023 report from the Net Zero Tracker, a collaboration between nonprofits and the University of Oxford, found that such commitments from fossil-fuel companies are “largely meaningless.” Most firms claim a net-zero target that fully accounts only for their operational emissions, such as whether their offices, car fleets, or equipment are powered with green energy, while ignoring much of the emissions from the fossil fuels they produce.When I talked with Willis about Microsoft’s energy business, he repeated over and over that “it’s complicated.” Willis explained that his team is focused on expanding energy access—“There are a billion people on the planet who don’t have access to energy,” he said—while also trying to accelerate the decarbonization of the world’s energy. I asked him how Microsoft planned to achieve the latter goal when it’s chasing contracts that help companies drill for fossil fuels. “Our plan, candidly stated, is to make sure we’re partnering with the right organizations who are leaning in and trying to accelerate and pull this [sustainability] journey forward,” he said. In other words, the company does not see its approach to selling the technology as incompatible with its sustainability goals. “AI will solve more problems than it creates,” Willis told me. “A lot of the dilemmas that we’re facing with energy will be resolved because of the relationship with generative AI.”Hoping to understand more about the company’s perspective, I also spoke with Alex Robart, a former Microsoft employee who left in 2022 and worked with Willis to write the energy principles. He called Microsoft’s approach practical. “Has Big Energy, incumbent energy, in a lot of ways behaved pretty badly, particularly in the past 25 to 40 years in the U.S. in particular, with regards to climate? Yeah, absolutely,” he told me. But he argued that fossil-fuel companies have to be part of the transition to cleaner alternatives and will do so only if they have financial incentives. “You need their balance sheets; you need their capital; you need their project-management expertise. We’re talking about building massive infrastructure, and building infrastructure is hard,” he said. Without that, “it’s fundamentally not going to work.”[Read: America’s new climate delusion]In the meantime, Microsoft has “not committed to a timeline” for phasing out work that is geared toward finding and developing new fossil-fuel reserves, a spokesperson said.Lucas Joppa, Microsoft’s first chief environmental officer, who left the company in 2022, fears that the world will not be able to reverse the current trajectory of AI development even if the technology is shown to have a net-negative impact on sustainability. Companies are designing specialized chips and data centers just for advanced generative-AI models. Microsoft is reportedly planning a $100 billion supercomputer to support the next generations of OpenAI’s technologies; it could require as much energy annually as 4 million American homes. Abandoning all of this would be like the U.S. outlawing cars after designing its entire highway system around them.Therein lies the crux of the problem: In this new generative-AI paradigm, uncertainty reigns over certainty, speculation dominates reality, science defers to faith. The hype around generative AI is accelerating fossil-fuel extraction while the technology consumes unprecedented amounts of energy. As Joppa told me: “This must be the most money we’ve ever spent in the least amount of time on something we fundamentally don’t understand.”

Can artificial intelligence really enrich fossil-fuel companies and fight climate change at the same time? The tech giant says yes.

Microsoft executives have been thinking lately about the end of the world. In a white paper published late last year, Brad Smith, the company’s vice chair and president, and Melanie Nakagawa, its chief sustainability officer, described a “planetary crisis” that AI could help solve. Imagine an AI-assisted tool that helps reduce food waste, to name one example from the document, or some future technology that could “expedite decarbonization” by using AI to invent new designs for green tech.

But as Microsoft attempts to buoy its reputation as an AI leader in climate innovation, the company is also selling its AI to fossil-fuel companies. Hundreds of pages of internal documents I’ve obtained, plus interviews I’ve conducted over the past year with 15 current and former employees and executives, show that the tech giant has sought to market the technology to companies such as ExxonMobil and Chevron as a powerful tool for finding and developing new oil and gas reserves and maximizing their production—all while publicly committing to dramatically reduce emissions.

Although tech companies have long done business with the fossil-fuel industry, Microsoft’s case is notable. It demonstrates how the AI boom contributes to one of the most pressing issues facing our planet today—despite the fact that the technology is often lauded for its supposed potential to improve our world, as when Sam Altman testified to Congress that it could address issues such as “climate change and curing cancer.” These deals also show how Microsoft can use the vagaries of AI to talk out of both sides of its mouth, courting the fossil-fuel industry while asserting its environmental bona fides. (Many of the documents I viewed have been submitted to the Securities and Exchange Commission as part of a whistleblower complaint alleging that the company has omitted from public disclosures “the serious climate and environmental harms caused by the technology it provides to the fossil fuel industry,” arguing that the information is of material and financial importance to investors. A Microsoft spokesperson said the company was unaware of the filing and had not been contacted by the SEC.)

For years, Microsoft routinely promoted its work with companies such as Schlumberger, Chevron, Halliburton, ExxonMobil, Baker Hughes, and Shell. Around 2020, the same year Microsoft made ambitious climate commitments that included a goal to reach carbon negativity by 2030, the tech firm grew quieter about such partnerships and focused on messaging about the transition to net zero. Behind the scenes, Microsoft has continued to seek business from the fossil-fuel industry; documents related to its overall pitch strategy show that it has sought energy-industry business in part by marketing the abilities to optimize and automate drilling and to maximize oil and gas production. Over the past year, it has leaned into the generative-AI rush in an effort to clinch more deals—each of which can be worth more than hundreds of millions of dollars. Microsoft employees have noted that the oil and gas industries could represent a market opportunity of $35 billion to $75 billion annually, according to documents I viewed.

Based on the documents, executives see these generative-AI tools—the buzziest new technology since the iPhone, and one that Microsoft has invested billions of dollars in—as a kind of secret weapon for client outreach. During an internal conference call with more than 200 employees last September, a Microsoft energy exec named Bilal Khursheed noted that, since the company’s generative-AI investments, the energy industry was turning to Microsoft for guidance on AI in a way that had perhaps “never happened before.” “We need to maximize this opportunity. We need to lay out the pathway to adopting generative AI,” he said, according to a transcript of the meeting I viewed. One such pathway? Using generative algorithms to model oil and gas reservoirs and maximize their extraction, Hema Prapoo, Microsoft’s global lead of oil and gas business, said later in the meeting. Several documents also emphasize Microsoft’s unique relationship with OpenAI as an additional selling point for energy clients, suggesting that GPT could drive productivity separate from fossil-fuel extraction. (OpenAI did not respond to a request for comment.)

From a business perspective, of course, Microsoft’s pursuit of massive deals with fossil-fuel companies makes sense. And such partnerships do not necessarily mean that the company is contradicting its climate commitments. Microsoft executives have made the case that AI can also help fossil-fuel companies improve their environmental footprint. Indeed, both Microsoft and its energy customers defend their partnerships by arguing that their goals work in harmony, not contradiction. They told me that AI services can make oil and gas production more efficient, increasing production while reducing emissions—a refrain I saw repeated in documents as part of Microsoft’s sales pitches. In addition, some of these companies run wind farms and solar parks, which further benefit from Microsoft’s cloud technologies. Microsoft has also touted exploratory academic research into how AI could be used to discover new materials for reducing CO2 in the atmosphere.

The idea that AI’s climate benefits will outpace its environmental costs is largely speculative, however, especially given that generative-AI tools are themselves tremendously resource-hungry. Within the next six years, the data centers required to develop and run the kinds of next-generation AI models that Microsoft is investing in may use more power than all of India. They will be cooled by millions upon millions of gallons of water. All the while, scientists agree, the world will get warmer, its climate more extreme.

[Read: AI is taking water from the desert]

Microsoft isn’t a company that exists to fight climate change, and it doesn’t have to assume responsibility for saving our planet. Yet the company is trying to convince the public that by investing in a technology that is also being used to enrich fossil-fuel companies, society will be better equipped to resolve the environmental crisis. Some of the company’s own employees described this idea to me as ridiculous. To these workers, Microsoft’s energy contracts demonstrate only the unsavory reality of how the company’s AI investments are actually used. Driving sustainability forward? Maybe. Digging up fossil fuels? As Prapoo put it in that September conference call, it’s a “game changer.”

Before Holly Alpine left Microsoft earlier this year—fed up, she said, with the company’s continued support of fossil-fuel extraction—she had spent nearly a decade there working in roles focused on energy and the environment. Most recently, she headed a program within Microsoft’s cloud operations and innovation division that invests in environmental sustainability projects in the communities that host the company’s data centers. Alpine had also co-founded a sustainability interest group within the company seven years ago that thousands of employees now belong to. (Like the other named sources in this story, she did not provide any of the documents I reviewed.)

Members of this group initially concerned themselves with modest corporate matters, such as getting the company’s dining halls to cut down on single-use items. But their ambitions grew, partly in response to Microsoft’s own climate commitments in 2020. These were made during a moment of heightened climate activism; millions around the world, including tech workers, had just rallied to protest the lack of coordinated action to cut back carbon emissions.

Microsoft has failed to reduce its annual emissions each year since then. Its latest environmental report, released this May, shows a 29 percent increase in emissions since 2020—a change that has been driven in no small part by recent AI development, as the company explains in the report. “All of Microsoft’s public statements and publications paint a beautiful picture of the uses of AI for sustainability,” Alpine told me. “But this focus on the positives is hiding the whole story, which is much darker.”

The root issue for Alpine and other advocates is Microsoft’s unflagging support of fossil-fuel extraction. In March 2021, for example, Microsoft expanded its partnership with Schlumberger, an oil-technology company, to develop and launch an AI-enhanced service on Microsoft’s Azure platform. Azure provides cloud computing to a variety of organizations, but this product was tailor-made for the oil and gas industries, to assist in the production of fossil fuels, among other uses. The hope, according to two internal presentations I viewed, was that it would help Microsoft capture business from many of the leading fossil-fuel providers. A spokesperson for Schlumberger declined to comment on this deal.

Recent AI advances have complicated the picture, though they have not changed it. One slide deck from January 2022 that I obtained presented an analysis of how Microsoft’s tools could allow ExxonMobil to increase its annual revenue by $1.4 billion—$600 million of which would come from maximizing so-called sustainable production, or oil drilled using less energy. (An ExxonMobil representative declined to comment.) Other documents provided details on multiple deals Chevron has signed with Microsoft to access the tech giant’s AI platform and other cloud services. An executive strategy memo from June 2023 indicated that Microsoft hoped to pitch Chevron on adopting OpenAI’s GPT-3.5 and GPT-4 to “deliver more business value.” A Chevron spokesperson told me that the company uses AI in part to “identify efficiencies in exploration and recovery and help reduce our environmental footprint.” There is the tension. On the one hand, AI may be able to help reduce drilling’s toll on the environment. On the other hand, it’s used for drilling.

[Read: Every time you post on Instagram, you’re turning on a light bulb forever]

How do these companies weigh the environmental benefits of a more efficient drilling operation against the environmental harms of being able to drill more, faster? A Shell spokesperson provided a quantifiable example of their thinking: Microsoft’s Azure AI platform allowed Shell to calculate the best settings for its equipment, driving down carbon emissions at several of its natural-gas facilities. One facility saw an estimated reduction of 340,000 metric tons of carbon dioxide per year. This seems impressive: Using estimated emissions from the EPA, this is roughly the amount of CO2 generated by 74,000 cars annually. Relative to Shell’s total emissions, however, it’s practically insignificant. According to the company’s own reporting, Shell was responsible for about 1.2 billion metric tons of emissions last year.

Within Microsoft, members of the sustainability group have repeatedly petitioned leadership to change its stance on these contracts. Google, for example, announced in 2020 that it would not make custom AI tools for fossil-fuel extraction—couldn’t Microsoft do the same? “We’ve never advocated for cutting ties with the fossil-fuel industry,” Alpine told me. Microsoft could work with clients on their transition to clean energy, without explicitly supporting extraction, Alpine reasoned.

To help make her case, Alpine presented a memo to Smith in December 2021 that calculated the effects of the company’s oil and gas deals. She pointed, for example, to a single 2019 deal with ExxonMobil that could purportedly “expand production by as much as 50,000 oil-equivalent barrels a day by 2025,” according to a Microsoft press release. Those extra barrels would produce an estimated 6.4 million metric tons of emissions, drastically outweighing a carbon-removal pledge that Microsoft made in 2020, she wrote. (I verified her estimate with multiple independent carbon analysts. ExxonMobil declined to comment.)

Employee advocates asked company leadership to amend its “Responsible AI” principles to address the environmental consequences of the technology. The group also recommended further restrictions on fossil-fuel-extraction projects. Around this time, Microsoft instead released a new set of principles governing the company’s engagements with oil and gas customers. It was co-authored by Darryl Willis, the corporate vice president of Microsoft’s energy division (and a former BP executive who served as BP’s de facto spokesperson during the Deepwater Horizon crisis). Unsurprisingly, it did not adopt all of the group’s suggestions.

What it did include was a stipulation that Microsoft will support fossil-fuel extraction only for companies that have “publicly committed to net zero carbon targets.” This may be cold comfort for some: A 2023 report from the Net Zero Tracker, a collaboration between nonprofits and the University of Oxford, found that such commitments from fossil-fuel companies are “largely meaningless.” Most firms claim a net-zero target that fully accounts only for their operational emissions, such as whether their offices, car fleets, or equipment are powered with green energy, while ignoring much of the emissions from the fossil fuels they produce.

When I talked with Willis about Microsoft’s energy business, he repeated over and over that “it’s complicated.” Willis explained that his team is focused on expanding energy access—“There are a billion people on the planet who don’t have access to energy,” he said—while also trying to accelerate the decarbonization of the world’s energy. I asked him how Microsoft planned to achieve the latter goal when it’s chasing contracts that help companies drill for fossil fuels. “Our plan, candidly stated, is to make sure we’re partnering with the right organizations who are leaning in and trying to accelerate and pull this [sustainability] journey forward,” he said. In other words, the company does not see its approach to selling the technology as incompatible with its sustainability goals. “AI will solve more problems than it creates,” Willis told me. “A lot of the dilemmas that we’re facing with energy will be resolved because of the relationship with generative AI.”

Hoping to understand more about the company’s perspective, I also spoke with Alex Robart, a former Microsoft employee who left in 2022 and worked with Willis to write the energy principles. He called Microsoft’s approach practical. “Has Big Energy, incumbent energy, in a lot of ways behaved pretty badly, particularly in the past 25 to 40 years in the U.S. in particular, with regards to climate? Yeah, absolutely,” he told me. But he argued that fossil-fuel companies have to be part of the transition to cleaner alternatives and will do so only if they have financial incentives. “You need their balance sheets; you need their capital; you need their project-management expertise. We’re talking about building massive infrastructure, and building infrastructure is hard,” he said. Without that, “it’s fundamentally not going to work.”

[Read: America’s new climate delusion]

In the meantime, Microsoft has “not committed to a timeline” for phasing out work that is geared toward finding and developing new fossil-fuel reserves, a spokesperson said.

Lucas Joppa, Microsoft’s first chief environmental officer, who left the company in 2022, fears that the world will not be able to reverse the current trajectory of AI development even if the technology is shown to have a net-negative impact on sustainability. Companies are designing specialized chips and data centers just for advanced generative-AI models. Microsoft is reportedly planning a $100 billion supercomputer to support the next generations of OpenAI’s technologies; it could require as much energy annually as 4 million American homes. Abandoning all of this would be like the U.S. outlawing cars after designing its entire highway system around them.

Therein lies the crux of the problem: In this new generative-AI paradigm, uncertainty reigns over certainty, speculation dominates reality, science defers to faith. The hype around generative AI is accelerating fossil-fuel extraction while the technology consumes unprecedented amounts of energy. As Joppa told me: “This must be the most money we’ve ever spent in the least amount of time on something we fundamentally don’t understand.”

Read the full story here.
Photos courtesy of

In Antarctica, Photos Show a Remote Area Teeming With Life Amid Growing Risks From Climate Change

Antarctica, one of the most remote places on Earth, teems with life

ANTARCTICA (AP) — The Southern Ocean is one of the most remote places on Earth, but that doesn't mean it is tranquil. Tumultuous waves that can swallow vessels ensure that the Antarctic Peninsula has a constant drone of ocean. While it can be loud, the view is serene — at first glance, it is only deep blue water and blinding white ice.Several hundred meters (yards) off the coast emerges a small boat with a couple dozen tourists in bright red jackets. They are holding binoculars, hoping for a glimpse of the orcas, seals and penguins that call this tundra home.They are in the Lemaire Channel, nicknamed the “Kodak Gap,” referring to the film and camera company, because of its picture-perfect cliffs and ice formations. This narrow strip of navigable water gives anybody who gets this far south a chance to see what is at stake as climate change, caused mainly by the burning of oil, gas and coal, leads to a steady rise in global average temperatures. The Antarctic Peninsula stands out as one of the fastest warming places in the world. The ocean that surrounds it is also a major repository for carbon dioxide, a greenhouse gas that contributes to warming. It captures and stores roughly 40% of the CO2 emitted by humans, according to the National Oceanic and Atmospheric Administration. On a recent day, Gentoo penguins, who sport slender, orange beaks and white spots above their eyes, appeared to be putting on a show. They took breaks from their dives into the icy water to nest on exposed rock. As the planet warms, they are migrating farther south. They prefer to colonize rock and fish in open water, allowing them to grow in population.The Adelie penguins, however, don't have the same prognosis. The plump figures with short flippers and wide bright eyes are not able to adapt in the same way. By 2100, 60% of Adelie penguin colonies around Antarctica could threatened by warming, according to one study. They rely on ice to rest and escape predators. If the water gets too warm, it will kill off their food sources. From 2002 to 2020, roughly 149 billion metric tons of Antarctic ice melted per year, according to the National Aeronautics and Space Administration. For tourists, Antarctica is still a giant, glacial expanse that is home to only select species that can tolerate such harsh conditions. For example, in the Drake Passage, a dangerous strip of tumultuous ocean, tourists stand in wonder while watching orca whales swim in the narrow strip of water and Pintado petrels soar above. The majestic views in Antarctica, however, will likely be starkly different in the decades ahead. The growing Gentoo penguin colonies, the shrinking pieces of floating ice and the increasing instances of exposed rock in the Antarctic Peninsula all underscore a changing landscape. Associated Press writer Caleigh Wells contributed to this report from Cleveland. The Associated Press’ climate and environmental coverage receives financial support from multiple private foundations. AP is solely responsible for all content. Find AP’s standards for working with philanthropies, a list of supporters and funded coverage areas at AP.org.Copyright 2025 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.Photos You Should See – December 2025

How Sewage Can Be Used to Heat and Cool Buildings

Wastewater flushed down the drain can be used to heat and cool homes and buildings in a sustainable way and climate experts say it's an untapped source of energy due to its stable temperature of approximately 70°F

DENVER (AP) — When a massive event center was being developed in Denver, planners had to contend with two existing 6-foot (1.8 meters) wide sewer pipes that emptied into the river, creating an unsightly dilemma. Developers wanted to bury them. The utility said the wastewater needed to vent heat before entering the river.There, a problem became a solution.Thermal energy from the sewage now powers a system that heats and cools classrooms, an equestrian center and veterinary hospital at the National Western Center complex.It's a recent example of how wastewater flushed down the drain can heat and cool buildings in a sustainable way. Climate experts say sewage is a largely untapped source of energy due to its stable temperature of approximately 70 F (21 C). Wastewater heat recovery systems have already been installed in California, Washington, Colorado, New York and Canada. Pipes that transport sewage are already built, making it a low-cost and widely available resource that reduces the need for polluting energy sources.There's no odor since the thermal energy transfer systems keep the wastewater separate from other components.“Wastewater is the last frontier of sustainable energy,” said Aaron Miller, the eastern regional manager for SHARC Energy, adding: “Even in this current environment where environmental stuff doesn’t really sell, there’s a financial benefit that we can sell to business owners.”While the technology works in a variety of locations, the Denver complex was uniquely positioned because it’s close to major sewer lines in a low-lying industrial zone. The vast majority of the center's heating and cooling comes from wastewater heat recovery. During extremely hot or cold weather, cooling towers and boilers are used to fill in the gaps.“Every city on the planet has a place just like this,” said Brad Buchanan, the center's CEO. “This is actually a value, a benefit that the bottoms have that the rest of the city doesn’t have.” How heat from sewage can warm buildings Extracting the thermal energy starts with the water from toilets, showers and sinks traveling down usual sewage lines before flowing into a tank that is part of the heat recovery system. Heavy solids are separated and the remaining fluid flows through a heat exchanger, a sealed device with stacks of metal plates that can take heat from one source and put it into another.Thermal energy from the wastewater is transferred to a clean water loop without the liquids coming into contact. The clean water carrying the thermal energy is then sent into a heat pump that can heat or cool rooms, depending on the weather. It can also heat potable water. Once the thermal energy has been extracted, the wastewater flows back into the sewer system and eventually to a water treatment plant.The heat from the sewage replaces the need for energy from other sources to heat and cool buildings, such as electricity from the grid. Electricity is only needed to run the heat exchanger and pumps that move the water, far more energy efficient than boilers and chillers used in traditional HVAC systems. Where wastewater heating is being used Miller said the systems work best in buildings with centralized hot water production, such as apartments, commercial laundromats, car washes and factories. In residential settings, Miller said the technology is best suited for buildings with 50 or more apartment units. The technology works in various climates around the country. Some buildings supplement with traditional HVAC components.The technology utilizes existing city pipes, which reduces the need for construction compared to some types of renewable energy, said Ania Camargo Cortes, a thermal energy networks expert and board member of the nonprofit HEET (Home Energy Efficiency Team).“If you can use wastewater, it’s going to be an enormous savings ... its billions of kilowatts available to us to use,” said Camargo Cortes.According to 2005 data from the U.S. Department of Energy, the equivalent of 350 billion kilowatt-hours' worth of hot water is flushed down drains each year.In Vancouver, Canada, a wastewater heat recovery system helps supply heat and hot water to 47 buildings served by the False Creek Neighbourhood Energy Utility. In 2025, 60% of the energy the utility generated came from sewage heat recovery, said Mark Schwark, director of water and utilities management at the City of Vancouver. The future of wastewater heat recovery Aaron Brown, associate professor of systems engineering at Colorado State University, said he believes use of the wastewater heat recovery systems will grow because it is an efficient, low-carbon system that is relatively easy to install.Unlike solar or wind power that can vary by weather or time of day, thermal energy from sewage can be available whenever it's needed, Brown said.“I think that to decarbonize, we have to think of some innovative solutions. And this is one that is not that complicated as far as the engineering technology, but it’s very effective,” said Brown.Epic Cleantec, which makes water reuse systems for office and apartment buildings, is expanding into heat recovery after previously focusing on treating water for toilets and irrigation. The company recently installed a wastewater heat recovery system in a high-rise building in San Francisco.Aaron Tartakovsky, co-founder and CEO of Epic Cleantec, said people have been conditioned to think that wastewater is dirty and should always be discarded, but his company recently launched two beers in collaboration with a brewer made from recycled shower and laundry water to illustrate novel ways to reuse it.“I think wastewater recovery is going to be a continuously growing thing because it’s something that we’re not taking advantage of,” said Tartakovsky.Peterson reported from Denver and O’Malley from Philadelphia.The Associated Press’ climate and environmental coverage receives financial support from multiple private foundations. AP is solely responsible for all content. Find AP’s standards for working with philanthropies, a list of supporters and funded coverage areas at AP.org.Copyright 2025 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.Photos You Should See – December 2025

Warm Weather and Low Snowpack Bedevil Western Ski Resorts

Lack of snow is causing problems for ski resorts and other businesses in the Western U.S. that rely on wintry conditions

EDWARDS, Colo. (AP) — Ski resorts are struggling to open runs, walk-through ice palaces can’t be built, and the owner of a horse stable hopes that her customers will be satisfied with riding wagons instead of sleighs under majestic Rocky Mountain peaks. It’s just been too warm in the West with not enough snow.Meanwhile, the Midwest and Northeast have been blanketed by record snow this December, a payday for skiers who usually covet conditions out West.In the Western mountains where snow is crucial for ski tourism — not to mention water for millions of acres (hectares) of crops and the daily needs of tens of millions of people — much less snow than usual has piled up.“Mother Nature has been dealing a really hard deck,” said Kevin Cooper, president of the Kirkwood Ski Education Foundation, a ski racing organization at Lake Tahoe on the California-Nevada line.Only a small percentage of lifts were open and snow depths were well below average at Lake Tahoe resorts, just one example of warm weather causing well-below-average snowpack in almost all of the West.In Utah, warmth has indefinitely postponed this winter’s Midway Ice Castles, an attraction 45 minutes east of Salt Lake City that requires cold temperatures to freeze water into building-size, palatial features. Temperatures in the area that will host part of the 2034 Winter Olympics have averaged 7-10 degrees (3-5 degrees Celsius) above normal in recent weeks, according to the National Weather Service.Near Vail, Colorado, Bearcat Stables owner Nicole Godley hopes wagons will be a good-enough substitute for sleighs for rides through mountain scenery.“It’s the same experience, the same ride, the same horses,” Godley said. “It’s more about, you know, just these giant horses and the Western rustic feel.”In the Northwest, torrential rain has washed out roads and bridges and flooded homes. Heavy mountain snow finally arrived late this week in Washington state but flood-damaged roads that might not be fixed for months now block access to some ski resorts.In Oregon, the Upper Deschutes Basin has had the slowest start to snow accumulation in records dating to 1981. Oregon, Idaho and western Colorado had their warmest Novembers on record, with temperatures ranging from 6-8.5 degrees (2-4 degrees Celsius) warmer than average, according to the National Oceanic and Atmospheric Administration.Continued warmth could bring yet another year of drought and wildfires to the West. Most of the region except large parts of Colorado and Oregon has seen decent precipitation but as rain instead of snow, pointed out NOAA drought information coordinator Jason Gerlich.That not only doesn’t help skiers but farmers, ranchers and people from Denver to Los Angeles who rely on snowpack water for their daily existence. Rain runs off all at once at times when it's not necessarily needed.“That snowpack is one of our largest reservoirs for water supply across the West,” Gerlich said.Climate scientists agree that limiting global warming is critical to staving off the snow-to-rain trend.In the northeastern U.S., meanwhile, below-normal temperatures have meant snow instead of rain. Parts of Vermont have almost triple and Ohio double the snowfall they had this time last year.Vermont’s Killington Resort and Pico Mountain, had about 100 trails open for “by far the best conditions I have ever seen for this time of year,” said Josh Reed, resort spokesman who has lived in Killington for a decade.New Hampshire ski areas opening early include Cannon Mountain, with over 50 inches (127 centimeters) to date. In northern Vermont, Elena Veatch, 31, already has cross-country skied more this fall than she has over the past two years.“I don’t take a good New England winter for granted with our warming climate,” Veatch said.Out West, it's still far too early to rule out hope for snow. A single big storm can “turn things around rather quickly,” pointed out Gerlich, the NOAA coordinator.Lake Tahoe's snow forecast over Thanksgiving week didn't pan out but Cooper with the ski racing group is eyeing possibly several feet (1-2 meters) in the long-term forecast.“That would be so cool!” Cooper said.Janie Har in San Francisco and Gene Johnson in Seattle contributed. Gruver reported from Fort Collins, Colorado. ___The Associated Press receives support from the Walton Family Foundation for coverage of water and environmental policy. The AP is solely responsible for all content. For all of AP’s environmental coverage, visit https://apnews.com/hub/climate-and-environmentCopyright 2025 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.Photos You Should See – December 2025

New York realizes it cannot afford its green promises

Up for reelection, Gov. Kathy Hochul (D) distance herself from climate catastrophists.

New York’s crusade against gas stoves is being placed on the back burner: Gov. Kathy Hochul (D) recently delayed the implementation of a 2023 ban on running gas in new buildings before it took effect in January.That hasn’t been Hochul’s only climate backtrack. In November, she agreed to a Trump-backed gas pipeline, marking the Empire State’s first pipeline in at least a decade — and the first since they passed their hallmark climate law in 2019 requiring the state to cut carbon emissions 40 percent by 2030. Hochul also signed an agreement granting permits to a gas-powered crypto mining facility, on the condition the plant nearly halves its pollution by 2030.When asked in October about the mandate for no gas in new buildings, the governor said she’s “going to look at this with a very realistic approach and do what I can, because my number one focus is affordability.” Hochul’s U-turn is an admission that the anti-energy agenda pushed by far-left environmental groups was always unaffordable.Climate activists accuse Hochul of being a traitor, but maybe the governor has finally realized that there’s rarely any upside to pursuing unrealistic decarbonization plans. At the very least, it looks like she’s paying attention to voters during a reelection cycle. Polling shows 61 percent of New Yorkers — including 54 percent of Democrats — “somewhat” or “strongly” agree that keeping energy affordable in the state is more important right now than reducing greenhouse gas emissions.The state’s residential electricity prices have risen 36 percent since New York passed its decarbonization legislation in 2019, according to a Progressive Policy Institute study. That’s almost three times faster than the rest of the country. Still, nearly half of New York’s electricity is supplied by fossil fuels. That study concludes that New York’s energy strategy is driving up costs, constraining reliable supply and jeopardizing the political viability of the state’s climate agenda. Other blue states face similar pain.It’s no coincidence that most of the states with the highest prices also have the most ambitious decarbonization mandates. Even though the federal government can dish out all kinds of subsidies for renewable energy, the states largely get to regulate how they generate and sell their electricity.Florida has chosen to base its energy generation on reliability and affordability, instead of ideology. Despite intense energy demands driven by a subtropical climate, Florida’s electricity prices are two percent lower than the national average. The state gets about 75 percent of its energy from natural gas.Symbolic climate gestures please activists, but they become a political liability when the bills come due.

The race to protect New York’s subway from extreme rainfall

As the planet warms, subway systems around the world have struggled to cope with floods far beyond what they were originally designed to handle.

(The Washington Post)The race to protect New York’s subway from extreme rainfallSubway systems around the world struggle to cope with floodingEvery day, thousands of people walk up these two yellow steps, never knowing they are treading on a key tool in the New York subway’s fight against a rising climate threat.Torrential rainstorms fueled by the warmer atmosphere are increasingly striking the city — creating floods that gush into tunnels and submerge tracks.At least 200 of the city’s 472 stations have flooded in the past two decades, according to data from the Metropolitan Transit Authority.December 19, 2025 at 5:00 a.m. EST7 minutes agoAs the planet warms, subway systems in places such as London and Tokyo have struggled to cope with floods far beyond what they were originally designed to handle. Stormwater regularly seeps into the subterranean networks, cutting off the transit lines that are their cities’ lifeblood. At least 14 passengers were killed in the Chinese city of Zhengzhou four years ago when floodwaters filled their train tunnel.Few places are more susceptible than New York. The city’s sprawling, century-old subway system was built close to the surface and contains more than 40,000 openings through which water can reach the tracks below.A map that shows where floods have been reported in the New York City Subway according to MTA data. The map shows stations that have two or more reported impacts in dark purple and stations that have one reported impact in lighter purple. Stormwater impacts can include such effects as pooled water on platforms and flooded tracks and tunnels. Staten Island Railway not shown.Its vulnerabilities underground are exacerbated by surging moisture in the skies above, a Washington Post analysis shows. The strongest plumes of water vapor the region sees each year — which provide fuel for the most severe storms — are intensifying almost twice as much as the global average. Very heavy rainfall events (producing at least 1.4 inches of rain in a day) have increased about 60 percent since the subway was first built.Yet public transit is also crucial for the fight against rising temperatures, officials say, because it means riders aren’t using cars or trucks that spew planet-warming pollution.This is what it will take to protect the New York subway — and its nearly 1.2 billion annual riders — in an era of escalating floods.Passengers navigate a train platform at Grand Central in New York on Dec. 11.An aging systemLong before the subway was built, before the city even existed, water defined New York. Manhattan was dotted by ponds and crisscrossed by creeks and streams. Wetlands fringed the Brooklyn and Queens borders, expanses of swaying cordgrass and reeds absorbing the rise and fall of tides.As the city grew, the original landscape was obscured by buildings and pavement. By the time subway construction began in the early 1900s, few remembered or cared where water once flowed.Today, that oversight is proving costly, said ecologist Eric Sanderson, vice president for urban conservation at the New York Botanical Garden. When he and his colleague analyzed reports of modern-day inundation from 311 calls and official flood maps, they found that the most susceptible parts of the city are often the sites of former waterways.An image made in 1893 of 116th Street near Lenox Avenue. (Brown Brothers/The New York Public Library)The 116th stop on the 2 and 3 lines, which run along Lenox Avenue in Central Harlem, illustrates the leaky system’s many vulnerabilities.The station sits at a low point in Manhattan’s topography along the path of a former creek. Flood maps from the New York City Department of Environmental Protection (DEP) show how stormwater collects at this spot — generating what the agency calls “deep and contiguous flooding” during periods of intense rain.A historic map of the area around the 116th St. station in Harlem. This map uses data from the Welikia Project to re-create what the region looked like in the early 17th century. The topography and coastline differ greatly from that of modern-day New York City. Tidal marshes and streams are annotated, and, when overlaid with modern Manhattan, a strong correlation with flood-prone areas of the subway system can be seen.This map of the same area as the before imagery shows what parts of the city's infrastructure are prone to flooding. When paired with the 17th-century re-creation, a strong connection to the flood-prone stations can be seen.“It’s not like you can erase the ecological factors that led to there being ... a creek there,” said Sanderson, who has spent more than a decade studying the city’s pre-Colonial landscape. “And climate change is supercharging those factors.”Like most of the original subway, the 116th Street station was built using the “cut and cover” technique, in which workers dug a trench, constructed the tunnel, then rebuilt the street on top.This graphic is an illustration of the intersection of 116th Street and Lenox Avenue, including a cross-section of the subway station below the street level. It shows how the intersection is at risk of flooding, including the station's entrances and vents. The illustration also shows how water drains off the platform, through the tracks, into a pump room located off the platform and into the city's sewer system. According to the DEP, this intersection can become submerged even during a “limited flood” scenario, when rainfall rates are 1.77 inches per hour.Water running off the sidewalk can drain into the station’s four entrances and several sidewalk grates, which are the station’s primary method of ventilation.116th Street station, Manhattan, Sept. 1, 2021Pans underneath the vents collect rainwater, but they can overflow in a deluge, spilling torrents onto the platform below.As water runs off the platform into the track bed, it mixes with floodwaters flowing from elsewhere in the tunnel. If water on the tracks rises as high as the electrified third rail — which supplies power to the trains — it becomes unsafe for subways to run.To avoid that scenario, a drain beneath the tracks carries water to a nearby sump pit. But the drain can become clogged with trash.When the sump pit fills, it activates pumps that push the water into the city’s sewer system. Two of the pumps at 116th Street are more than 100 years old and can handle only a fraction of the rainfall the city now experiences.After decades of budget crises and deferred maintenance, much of the subway system is outdated and in disrepair, the MTA acknowledges.But when it comes to storms, aging pumps are its “Achilles’ heel,” said Eric Wilson, the agency’s senior vice president for climate and land use planning. Of more than 250 pump rooms in the system, 11 percent are in poor or marginal condition, according to a 2023 assessment.At 116th Street, the struggling pneumatic pumps emit a shuddering screech every time they turn on.“You’re looking at a relic, basically,” said Juan Urena, a superintendent in the Department of Subway’s hydraulics division. “It’s time to upgrade.”MTA workers look into the sump pit at the 116th Street station on Oct. 17. The decision to put the subway underground stems from the “Great White Hurricane” of 1888, which killed about 200 people in New York and stranded roughly 15,000 people on the elevated trains that were then the city’s primary transit system. Freezing passengers fled one snowbound train by climbing down a ladder — but only after they paid the ladder’s owner 25 cents each.The catastrophe left residents aghast that their modern metropolis could be brought to its knees by the weather. Within three years, the state had authorized construction of a subterranean transit system.Water has posed a problem from the beginning. Groundwater seeps through tunnel walls, requiring the MTA to pump at least 10 million gallons out of the system every day. When it rains, New York’s tall buildings and paved surfaces prevent water from seeping into soils, causing it to run off into subway tunnels instead.Yet climate change has made the challenge worse, officials said. Plumes of warm, waterlogged air frequently stream out of the tropics and make landfall in the city, dropping large amounts of rain faster than the landscape and infrastructure can absorb it.Most parts of New York’s combined sewer system, which funnels both stormwater and sewage, are designed to handle up to 1.75 inches of rain in an hour. When many of the system’s components were installed more than 50 years ago, that intensity of rain could be expected roughly twice a decade. But a rain gauge at Central Park has recorded rainfall exceeding that threshold five times in the past five years.This is a line chart of annual maximum rainfall at the Central Park gauge. It shows inches per hour since a little before the 1950s. The combined sewer system was designed to take in 1.75 inches per hour at its upper limits. The line chart shows how, in the past few decades, that has been more often exceeded by rainfall averages.“The sewers were designed for a climate we no longer live in,” said Rohit Aggarwala, the city’s chief climate officer and DEP commissioner.When a strong moisture plume swept into the city on July 14, unleashing 2.07 inches of rain in one hour, the sewer system was quickly overwhelmed. Untreated stormwater backed up into streets and homes. Water rained through subway grates, streamed down station stairwells and seeped through cracks in the walls.The overtaxed sewers couldn’t take in additional water from the MTA’s pumps and instead became a source of flooding. At the 28th Street station, water burst through a manhole cover on a train platform, creating a geyser that drenched passengers waiting for the uptown 1 train. (The city welded the cover shut soon after.)“It’s an incredible challenge for any city to have to face,” said Bernice Rosenzweig, an environmental scientist at Sarah Lawrence College and a lead author of the New York City Panel on Climate Change. “The bad decisions were made generations ago, and now it’s figuring out how to deal with that in a fully built-out and operating city.”A manhole cover at the spot where massive flooding took place at the 28th Street station.The worst-case scenarioRosenzweig still remembers stories that emerged from the Zhengzhou subway flooding.Amid the heaviest downpour ever observed in China, water from a collapsed drainage ditch surged into a subway tunnel during rush hour. Survivors spoke of standing on seats and lifting children above the steadily rising water. People began to vomit and faint from lack of oxygen as they exhausted their dwindling pocket of air.The situation in China, which stemmed from a combination of extreme weather, infrastructure failures and human missteps, is not completely analogous to what might happen in New York, Rosenzweig noted.“But it was an important event for city managers and emergency managers to show that it’s not just the nightmare scenario of someone who studies natural hazards for a living,” she said. “It’s something that can happen and has happened, and it’s not unrealistic to plan for those worst-case scenarios.”When the remnants of Hurricane Ida lashed the New York region just over one month later, it underscored Rosenzweig’s worries. At its peak, the storm dropped a record-breaking 3.46 inches in a single hour — about twice the intensity of rainfall the city’s stormwater systems are designed to handle.The MTA’s Juan Urena looks over an antiquated pump room at the 116th Street station on Oct. 17.NEW YORK, NY, US, October 17- MTA workers look over an antiquated pump room at the 116th St. Station in New York, on Friday, October 17, 2025. Increasing rainfall has caused flooding in New York subways, a problem the city has scrambled to address. Photographer: Victor J. Blue for The Washington PostNo injuries or deaths were recorded in the subways during Ida. Yet all but one of New York’s 36 subway lines were shut down, according to an after-action report, and roughly 1,250 passengers had to be evacuated from the system. Damage to MTA infrastructure totaled $128 million.The full economic toll of transit disruptions is probably even greater, research suggests.“It is the absolutely vital organ of the region,” said Jamie Torres-Springer, president of MTA construction and development.The subway is also important for fighting climate change, he noted: By keeping cars off the street, the MTA estimates that it avoids about 22 million tons of carbon dioxide emissions each year.Yet floods make it harder for New Yorkers to get where they need to go. Subway service was disrupted due to flooding at least 75 times between January 2020 and September 2025, according to a Post analysis of MTA alerts.There’s no simple way to stop heavy rains from spilling into the system, Torres-Springer said.Though the MTA dedicated nearly $3 billion in state and federal funds to implement coastal resiliency measures after Hurricane Sandy ravaged the system in 2012, those protections don’t shield against inland flooding, he noted. The tunnel doors and grate covers developed after Sandy must also be deployed with hours or days of advance notice — precluding their use during sudden cloudbursts, like the July 14 storm.Outdated pipes in the pump room at the 116th Street station.Stemming the tideInstead of racing to respond to an approaching deluge, the MTA has adopted a sprawling set of interventions that can protect the subway system day in and day out. In a five-year capital plan passed this spring, the agency committed an unprecedented $700 million to new stormwater defenses.Much of that funding will go toward upgrading at least a dozen pump rooms, including the one at 116th Street. New pumps are made of stainless steel and can handle much more water per minute than their older counterparts, Urena said.But many solutions are lower-tech — what Torres-Springer calls “tactical” interventions that can be implemented one by one, gradually plugging the system’s thousands of leaks.By adding one or two steps to station entrances — as the agency is doing at 116th Street — the MTA aims to protect places that used to get drenched with every storm.New raised grates, sometimes topped by bicycle racks or benches, can prevent puddles on the surface from falling onto passengers below.At a few stations, including 116th Street, the agency has sealed vents with temporary covers until more permanent improvements can be installed.In some places, stopping floods is as simple as keeping debris out of the drains that siphon water on the tracks into station pump rooms. Since 2017, the MTA has maintained a catalogue of nearly 10,000 drain boxes scattered across the subway system. The agency has said it aims to clean at least a quarter of them every year.As of this month, the MTA has installed or set aside funds for flood defenses at 110 of the 200 flood-prone stations, according to a Post analysis of agency data. But 22 stations that have flooded more than once are not on its list of targets. Several of these stations, most of which are in Brooklyn, were among those inundated during the July 14 storm.A 2023 report from New York’s state comptroller also faulted the MTA for failing to complete several flood-proofing projects and for inconsistently following extreme-weather protocols.In a statement, MTA spokesperson Mitch Schwartz said that vulnerable stations not targeted in the capital plan might still receive flood defenses as part of other upgrade work.“We have never moved faster to keep this system safe from extreme weather,” he said.But the MTA can’t hold back surging floodwaters on its own, Torres-Springer said. The fate of the subway is inextricably linked to that of another massive, aging underground system: the sewer.The DEP recently adopted a requirement that all new stormwater infrastructure be capable of withstanding 2.15 inches of rainfall in an hour. The agency has directed about $10 billion to drainage network improvements, expanded sewer mains and underground tanks capable of storing excess water during storms.With a limited budget and more than 7,400 miles of sewer pipes to maintain, Aggarwala said, the DEP’s priority is preventing water from getting into people’s homes, where it can destroy possessions and threaten lives. Subway disruptions due to flooding, he added, are more temporary.As the skies above New York grow ever warmer and wetter, keeping water out of the subway will also involve restoring it to the surface where it originally flowed.Ecologist Eric Sanderson.Guided in part by Sanderson’s research on New York’s original ecology, city agencies are trying to uncover hidden creeks and wetlands — creating “bluebelts” that can absorb excess rainfall during severe storms. By alleviating pressure on the sewer system and giving runoff an alternate place to go, officials say that these projects can curb flooding in neighborhoods and subway stations alike.The initiative is a long-overdue reversal of the impulse that led New York to pave over waterways and bury the transit system in centuries past, Sanderson said.“A city that works with its nature,” he said, “is going to be a city that lasts longer for its people.”About this storyTop videos by Wynter Gray/Storyful; @nuevayorkypunto/Spectee; Paullee Wheatley-Rutner/Storyful; Ayeraye Akosua Hargett/Storyful; and @anjalitsui.Design and development by Talia Trackim. Additional code by Frank Hulley-Jones. Editing by Simon Ducroquet, Roger Hodge, Betty Chavarria, Dominique Hildebrand, Juliet Eilperin and John Farrell. Copy editing by Rachael Bolek.MethodologyTo examine trends in heavy rainfall in New York City, The Post analyzed 130 years of rain gauge data from the National Oceanic and Atmospheric Administration’s National Centers for Environmental Information weather station in Central Park. To define what counts as a heavy rainfall day, The Post used the period from 1895 to 1924 to find the threshold for a 95th percentile precipitation event. Days with at least 0.5 millimeters of precipitation were included. Using a simple linear regression, The Post measured the change in frequency of the 95th percentile rain events at the station from 1895 to 2024.The analysis showed a significant positive trend in 95th percentile rain events, with the number of days each year with heavy rainfall increasing by nearly three days, a roughly 60 percent increase.Carolien Mossel, a PhD candidate in the CUNY Graduate Center’s earth and environmental science department, provided guidance on the data and analysis of hourly precipitation amounts for Central Park from May 1948 to August 2025.​​To investigate global changes in extreme precipitation, The Post measured the amount of water vapor flowing through Earth’s atmosphere, a metric called integrated vapor transport (IVT). The analysis also identified days and locations where heavy rainfall coincided with high IVT. See more about The Post’s methodology for the IVT analysis here.To map how present-day New York City would have looked in the early 17th century, The Post used data from Eric Sanderson’s “Before New York: An Atlas and Gazetteer” (Abrams, 2026), courtesy of the New York Botanical Garden.

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